Question

find :21 1/4 +3 1/10 - 1 1/11

Answer 1

Solution:

21 1/4 +3 1/10 - 1 1/11

= (21×4+1)/4 + (3×10+1)/10

-(1×11+1)/11

= 85/4 + 31/10-12/11

Find the LCM of 4,10,11 .

LCM= 220

= (110×85 + 22×31-12×20)/220

= ( 9350+ 682-240)/220

= (9360+442)/220

= 9802/220

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